Supplement S1: Molecular information on ectomycorrhizal(EMF) and arbuscular mycorrhizal(AMF) species. EMF were identified by ITS sequencing and sequence information was deposited in NCBI databank. If the homology was higher than 97% and the score higher than 900 bits, the name suggested by the database, preferentially that of UNITE was accepted. Otherwise, unknown ectomycorrhizas were called UECM with an internal morphotype number (M).Species for which sequence information was not available were called by their internal morphotype number (M). ACC = Accession number in NCBI databank, Best BLAST match = name obtained from NCBI or UNITE, UncECM= Uncultured Ectomycorrhiza

Species
(Host) / ACC / Name of
Best BLAST match / Source database / Source Accession / Length
of frag-
ment / Homo-
logy
[%] / Score

(Fagus+ Tilia+ Carpinus)

Amanita rubescens / EU346872 / Amanita rubescens / UNITE / UDB001478 / 423 / 99 / 848
Cenococcum geophilum / EU346870 / Cenococcum geophilum / UNITE / UDB002301 / 508 / 99 / 983
Clavulina cristata / EU816621 / Clavulina cristata / UNITE / UDB000073 / 581 / 99 / 1212
Inocybe maculata / EU816617 / Inocybe maculata / UNITE / UDB000765 / 567 / 98 / 1104
Russula delica / EU816643 / Russula delica / UNITE / UDB001625 / 858 / 100 / 1104
Xerocomus chrysenteron / EU350581 / Xerocomus chrysenteron / UNITE / UDB001403 / 626 / 99 / 1209
UECM (M73) / EU816646 / Unc ECM (Pezizaceae) / NCBI / DQ974749.1 / 593 / 86 / 651
UECM (M83) / EU816651 / Unc ECM (Tomentella) / NCBI / EF218827.1 / 583 / 93 / 854
UECM (M84) / EU816652 / Unc ECM fungus / NCBI / EU375706.1 / 600 / 98 / 1044
UECM (M85) / EU816653 / Unc ECM (Thelephoraceae) / NCBI / AJ893317.1 / 577 / 97 / 1005
UECM (M87) / EU816655 / Unc ECM (Thelephoraceae) / NCBI / DQ974791.1 / 574 / 94 / 891

(Fagus+Tilia)

Craterellus cornucopioides / EU816605 / Craterellus cornucopioides / UNITE / UDB000053 / 780 / 98 / 967
Humaria hemisphaerica / EU816610 / Humaria hemisphaerica / UNITE / UDB000988 / 643 / 97 / 1098
Inocybe umbrina / EU816641 / Inocybe umbrina / UNITE / UDB000608 / 556 / 99 / 985
Inocybe sp. (M88) / EU816656 / Inocybe spp / NCBI / AJ534923.1 / 562 / 99 / 1020
Lactarius subdulcis / EU346875 / Lactarius subdulcis / UNITE / UDB000048 / 703 / 100 / 1384
Russula chloroides / EU816642 / Russula chloroides / NCBI / AF418604.1 / 571 / 100 / 1055
Tomentella stuposa / EU816618 / Tomentella stuposa / UNITE / UDB002428 / 545 / 99 / 1037
Tomentella sublilacina / EU816604 / Tomentella sublilacina / UNITE / UDB000033 / 577 / 99 / 1125
Tomentella terrestris / EU816649 / Tomentella terrestris / UNITE / UDB000222 / 509 / 99 / 983
Tomentella viridula / EU816647 / Tomentella viridula / UNITE / UDB000261 / 590 / 99 / 1048
Xerocomus pruinatus / EU350582 / Xerocomus pruinatus / UNITE / UDB000018 / 633 / 100 / 1255
UECM (M40) / EU816627 / Unc ECM (Tomentella) / NCBI / AM159590.1 / 555 / 99 / 1020
UECM (M57) / EU816638 / Tomentella spp / NCBI / AY635173.1 / 550 / 95 / 869
UECM (M63) / EU816640 / Inocybe rimosa / UNITE / UDB000645 / 582 / 94 / 629
UECM (M82) / EU816650 / fungus / NCBI / AB218113.1 / 588 / 96 / 963
UECM (M86) / EU816654 / Tomentella bryophila / UNITE / UDB000035 / 644 / 93 / 858
(Fagus + Carpinus)
Melanogaster broomeianus / EU816648 / Melanogaster broomeianus / NCBI / AJ555517.1 / 628 / 98 / 1116
Russula puellaris / EU816628 / Russula puellaris / UNITE / UDB000352 / 547 / 99 / 1039
Thelephoraceae sp. (M5) / EU816607 / Thelephoraceae spp / NCBI / AY751561.1 / 654 / 97 / 1079
Tomentella pilosa / EU816644 / Tomentella pilosa / UNITE / UDB000241 / 495 / 98 / 909
Tuber puberulum / EU816619 / Tuber puberulum / UNITE / UDB000122 / 577 / 99 / 1055
UECM (M6) / EU816608 / Unc ECM (Tomentella) / NCBI / AM161537.1 / 639 / 99 / 1166
UECM (M42) / EU816629 / Unc ECM (Trichocomaceae) / NCBI / AY351631.1 / 557 / 98 / 904
(Tilia + Carpinus)
Cortinarius infractus / EU816664 / Cortinarius infractus / UNITE / UDB000147 / 622 / 99 / 1189
Piloderma lanatum / EU816674 / Piloderma lanatum / UNITE / UDB001744 / 549 / E-Value =0 / 890
Rhizopogon spp / EU816666 / Rhizopogon spp / NCBI / DQ680180.1 / 568 / 99 / 1022
Sebacina sp. (M90) / EU826353 / Sebacina spp / UNITE / UDB000773 / 600 / 99 / 1177
UECM (M99) / EU816663 / Tomentella coerulea / UNITE / UDB000266 / 589 / 93 / 843
UECM (M102) / EU816665 / Unc ECM (Trichocomaceae) / NCBI / AY351631.1 / 590 / 98 / 905
UECM (M125) / EU816679 / Unc ECM (Sebacinaceae) / NCBI / EF218814.1 / 528 / 96 / 874
(Fagus)
Cortinarius anomalus / EU816625 / Cortinarius anomalus / UNITE / UDB001008 / 524 / 99 / 1020
Genea hispidula / EU816611 / Genea hispidula / UNITE / UDB001408 / 540 / 100 / 1070
Inocybe asterospora / EU816612 / Inocybe asterospora / UNITE / UDB000098 / 544 / 99 / 1051
Tomentella sp. / EU816639 / Tomentella spp / NCBI / AJ534913.1 / 747 / 98 / 1061
Laccaria maritima / EU816633 / Laccaria maritima / UNITE / UDB001495 / 591 / 99 / 1129
Lactarius blennius / EU816609 / Lactarius blennius / UNITE / UDB000363 / 659 / E-Value =0 / 1277
Lactarius fluens / EU816606 / Lactarius fluens / UNITE / UDB000023 / 583 / 98 / 1106
Russula fellea / EU816623 / Russula fellea / UNITE / UDB000345 / 593 / 100 / 1176
Russula ochroleuca / EU350580 / Russula ochroleuca / UNITE / UDB000772 / 672 / 99 / 1273
Russula raoultii / EU816634 / Russula raoultii / UNITE / UDB000328 / 571 / 99 / 1095
Russula solaris / EU816636 / Russula solaris / UNITE / UDB000302 / 501 / 100 / 989
Xerocomus badius / EU816626 / Xerocomus badius / UNITE / UDB002408 / 577 / 99 / 1116
UECM (M13) / EU816613 / Unc ECM (Russula) / NCBI / AM161527.1 / 300 / 100 / 555
UECM (M14) / EU816614 / Hydnotrya tulasnei / UNITE / UDB000095 / 624 / 92 / 819
UECM (M18) / EU816615 / Unc ECM (Atheliaceae) / NCBI / AM161526.1 / 446 / 95 / 725
UECM (M28) / EU816622 / Unc ECM fungus / NCBI / |AB219151.1 / 537 / 98 / 937
UECM (M44) / EU816630 / Unc ECM(Pezizaceae) / NCBI / DQ974687.1 / 618 / 94 / 948
UECM (M45) / EU816631 / Unc ECM / NCBI / AB219857.1 / 501 / 99 / 907
UECM (M52) / EU816635 / Uncultured soil fungus clone / NCBI / DQ420844.1 / 566 / 100 / 1046
UECM (M56) / EU816637 / Uncultured (Pezizomycotina) / NCBI / DQ273333.1 / 545 / 100 / 1007
UECM(M70) / EU816645 / Inocybe glabripes / NCBI / AM882902.1 / 519 / 99 / 953

(Tilia)

Inocybe cookei / EU816677 / Inocybe cookei / NCBI / emb|AM882955.1| / 558 / 99 / 998
Inocybe geophylla / EU816657 / Inocybe geophylla / NCBI / emb|AM882874.1| / 664 / 99 / 1123
Russula cyanoxantha / EU816662 / Russula cyanoxantha / UNITE / UDB001483 / 487 / 98 / 945
Russula pectinatoides / EU816667 / Russula pectinatoides / UNITE / UDB002506 / 585 / E-Value=0 / 1128
Sebacina aff. epigaea / EU816673 / Sebacina aff. Epigaea / NCBI / AF490393.1 / 654 / 99 / 1014
Peziza michelii / EU816678 / Peziza michelii / UNITE / UDB000986 / 538 / 99 / 1059
Peziza succosa / EU816676 / Peziza succosa / UNITE / UDB000984 / 524 / 99 / 997
Tuber borchii / EU816671 / Tuber borchii / NCBI / AJ557542.1 / 591 / 99 / 1011
UECM (M19) / EU816616 / Unc ECM (Pezizaceae) / NCBI / AY299221.1 / 495 / 98 / 872
UECM (M91) / EU816658 / Unc ECM (Inocybe) / NCBI / DQ068957.1 / 548 / 99 / 979
UECM (M92) / EU816659 / Unc ECM (Pezizales) / NCBI / AJ969438.1 / 257 / 100 / 475
UECM (M93) / EU816660 / Uncultured Thelephoraceae / NCBI / EF619818.1 / 527 / 96 / 885
UECM (M95) / EU816661 / Inocybe actuella / UNITE / UDB000609 / 568 / 92 / 462
UECM (M106) / EU816668 / Unc ECM (Hydnobolites) / NCBI / EF417805.1 / 586 / 86 / 512
UECM (M108) / EU816669 / Unc ECM fungus / NCBI / AB218177.1 / 568 / 91 / 784
UECM (M109) / EU816670 / Unc ECM (Terfeziaceae) / NCBI / AF440666.1 / 527 / 99 / 946
UECM (M115) / EU816672 / Unc ECM (Thelephoraceae) / NCBI / AJ893311.1 / 540 / 99 / 961
UECM (M119) / EU816675 / Unc ECM (Pezizaceae) / NCBI / AM159603.1 / 486 / 99 / 756
UECM (M126) / EU816680 / Inocybe spp / NCBI / EU523580.1 / 496 / 89 / 593
UECM (M127) / EU816681 / Tomentella spp / NCBI / DQ974780.1 / 553 / 95 / 885
UECM (M128) / EU816682 / Tomentella spp / NCBI / EU444541.1 / 486 / 99 / 893
(Carpinus)
Inocybe corydalina / EU816683 / Inocybe corydalina / UNITE / UDB000640 / 594 / 99 / 1106
Inocybe hirtella ) / EU826355 / Inocybe hirtella / UNITE / UDB000642 / 535 / 99 / 1047
UECM (M135) / EU816684 / Unc ECM (Sebacinaceae) / NCBI / AY825519.1 / 346 / 97 / 606
UECM (M136) / EU816685 / Vouchered mycorrhizae (Humaria) / NCBI / EU024888.1 / 575 / 99 / 1057
UECM (M137) / EU816686 / Unc ECM (Agaricales) / NCBI / AY299219.1 / 554 / 95 / 874
UECM (M138) / EU816687 / Unc ECM (Tuber) / NCBI / DQ355246.1 / 545 / 99 / 979
UECM (M142) / EU816688 / Unc ECM
UECM (M143) / EU826354 / Uncultured soil fungus
(Fraxinus)
Glomus_sp._5 / EU931252 / Glomus sp. 0151 / NCBI / AY174689.1 / 546 / 97 / 835
UAMF (sp._1) / EU931248 / Glomus sp. 0161 / NCBI / AY174690.1 / 588 / 95 / 824
(Fraxinus+Acer)
UAMF (sp._12) / EU931254 / Uncultured Glomus / NCBI / AM384970.1 / 536 / 91 / 728
Glomus_sp._6 / EU931253 / Glomus mycorrhizal symbiont / NCBI / AJ716323.1 / 556 / 98 / 984
Glomus_sp._3 / EU931250 / Glomus sp. 0171 / NCBI / AY174691.1 / 537 / 98 / 905
UAMF (sp._4) / EU931251 / Glomus sp. 0151 / NCBI / AY174689.1 / 493 / 95 / 813
UAMF (sp._2) / EU931249 / Glomus sp. 0151 / NCBI / AY174689.1 / 535 / 96 / 881